130 Mr. F. P. Pascoe on the Colydiide 
With two costs on each side of the prothorax, the 
inner forming a loop posteriorly. 
Outer costa entire, strongly marked. 
Space between the two inner cost and the pos- 
terior loops simply granulate. 
Margins of the prothorax regularly crenate.... P. heros, n.s. 
Margins of the prothorax irregularly rugose. 
Coste of the elytra strongly crenate ...... P. prolata, Pase. 
Costee of the elytra feebly crenate.......... P, varia, 0. 8. 
Space between the two inner cost and the loops 
with two longitudinal raised lines ........ -. PB. nana, n. 8. 
Outer costa interrupted, feebly marked. 
Prothorax broadest before the middle ....... ... P. lunaris, Pase. 
Prothorax broadest behind the middle. 
Margins of the prothorax regularly lobed «... P. mornata, Pase. 
Margins of the prothorax nearly entire ...... P. detracta, n. 8. 
With one costa only on each side ..........eeeeaee P. elevata, n. 8. 
I have four more species belonging to this genus in my collection ; 
in none of these does the inner costa form a complete loop, although 
in all it doubles back more or less posteriorly. All the species have 
five costee on each elytron, the intervals being marked with a double 
row of large, squarish punctures. 
Phormesa heros. 
P. fusca; prothorace marginibus regulariter crenatis, utrinque bicostato, 
costa exteriore integra, valida; elytris obscure luteo maculatis. 
Hab. Dorey ; Morty. 
Moderately broad, dark brown, opaque; head thickly granulose ; 
prothorax roughly granulate, the sides slightly rounded, the margins 
minutely but very distinctly and regularly crenate, the external costa 
strongly marked, the inner forming a large loop posteriorly which ex- 
tends nearly to the base ; scutellum punctiform ; elytra oblong, scarcely 
broader than the prothorax, the costs strongly marked and crenate, 
with large, deep punctures in a double row between them; body be- 
neath chestnut-brown, granulate; legs and antennee dark chestnut-red. 
Length 21 lines. 
The largest of the genus, and best distinguished from Phormesa 
prolata by the regular crenatures of the margins of the prothorax, 
contrasted with their confusedly rugose appearance in that species. 
Phormesa varia. 
P. fusco-ferruginea; prothorace marginibus lineato-rugosis, utrinque 
bicostato, costa exteriore integra ; elytris ferrugineo variegatis, costis 
leviter crenatis. 
Hab, Amboyna. 
